Hitchhiker:

To masturbate while your hand is numb, to give the sensation that someone else is pleasuring you, while driving a vehicle.
On the way home from work last night I grabbed myself a quick hitchhiker
by Ryedawg II September 21, 2009
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When you are with a female and you are giving her oral and you realize that she would rather rub one off herself. You proceed to allow her to rub one off while you extend your thumb and stick it in the vagina while she is rubbing so that you can feel all the goodness during her orgasm.
As I was giving my girl oral, I realized that she would prefer The Hitchhiker so I proceeded to give her a thumb up for joy.
by cskIcemancsk July 30, 2009
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when doing a girl doggstyle, the gentleman inserts his thumb in said girl's butthole
She loves hitchhiking, though I always need to wash my hands afterwards.
by BaroqueBill March 22, 2010
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When you borrow your friend's shorts/pants after he had just jerked-off in them. You are now harboring a "hitchhiker"! You then go home to your wife/gf and do the dirty, 9 months later you have a kid fathered by none other than... Your best friend!
The Hitchhiker
by G Money 44 June 24, 2011
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A thumb in either the anal or vaginal orifice while in the doggiestyle position.
I might have married the bitch if she had been down with the hitchhiker.
by John Clever March 20, 2003
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n.: (slang) a small nugget of fecal matter attached to the hindquarters of an animal such as a cat or dog; especially common among long-haired species.

syn: dingleberry
"Quick, get Muffins off of the new duvet! He has a hitchhiker on his butt!"
by EmmyFoofoo May 6, 2008
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A hitchhiker is an item that is placed in a geocache, and has instructions to travel to other caches.
Sometimes they have logbooks attached so you can log their travels.
A Travel Bug is an example of a hitchhiker
Placed a hitchhiker in the last cache i found, i sure hope it travels the world!
by outlive December 17, 2006
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